Meaning : Of an angle. Between 90 and 180 degrees.
Of an angle. Less than 90 degrees.
acuteMeaning : (of a leaf shape) rounded at the apex.
Meaning : Lacking in insight or discernment.
Example :
Too obtuse to grasp the implications of his behavior.
A purblind oligarchy that flatly refused to see that history was condemning it to the dustbin.
Synonyms : purblind
Meaning : Slow to learn or understand. Lacking intellectual acuity.
Example :
So dense he never understands anything I say to him.
Never met anyone quite so dim.
Although dull at classical learning, at mathematics he was uncommonly quick.
Dumb officials make some really dumb decisions.
He was either normally stupid or being deliberately obtuse.
Worked with the slow students.